/*
 * WorldEdit, a Minecraft world manipulation toolkit
 * Copyright (C) sk89q <http://www.sk89q.com>
 * Copyright (C) WorldEdit team and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.sk89q.worldedit.util.gson;

import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.sk89q.worldedit.math.Vector3;

import java.lang.reflect.Type;

/**
 * Deserializes {@code Vector3}s for GSON.
 */
public class VectorAdapter implements JsonDeserializer<Vector3> {

    @Override
    public Vector3 deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        JsonArray jsonArray = json.getAsJsonArray();
        if (jsonArray.size() != 3) {
            throw new JsonParseException("Expected array of 3 length for Vector3");
        }

        double x = jsonArray.get(0).getAsDouble();
        double y = jsonArray.get(1).getAsDouble();
        double z = jsonArray.get(2).getAsDouble();

        return Vector3.at(x, y, z);
    }
}
